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  1. #!/usr/bin/perl
  2.  
  3. use strict;
  4. use warnings;
  5.  
  6. print "a" + "b"; print "\n";
  7. print "a" + 1; print "\n";
  8. print "a" . 1; print "\n";
  9. print 1 + 2; print "\n";
  10. print 1 . 2; print "\n";
Success #stdin #stdout #stderr 0s 3740KB
comments (?)
stdin
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Standard input is empty
stdout
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0
1
a1
3
12
stderr
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Argument "b" isn't numeric in addition (+) at prog.pl line 6.
Argument "a" isn't numeric in addition (+) at prog.pl line 6.
Argument "a" isn't numeric in addition (+) at prog.pl line 7.
https://ideone.com/yZFiBn
language:
Perl (perl 5.28.1)
created:
9 years ago
visibility:
public

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